This is one of Montblanc’s classic Noblesse pens, introduced about 40 years ago, notable for its slim design and ease of use. The Noblesse line has many variations with different plating and patterns, but to find a pen with almost intact appearance after all these years is really rare.
This Noblesse Gold Plate version is especially popular with collectors thanks to its delicate 20K gold plating and flexible nib mechanism, making it easy to use when needed.